1472 New Patents rotor surface on the upstream side of its rota- tional axis, and causing the rotor to rotate at a linear speed of its outer surface which is substantially higher than the linear flow rate of the stock in the conduit so that the rotor surface breaks up the air impinging thereon into bubbles and dist- ributes those bubbles in the stock flowing therepast to create foam within the cell. 5028398 DEVICE FOR PROVIDING A CONTINUOUS BIOLOGICAL DECOMPOSITION OF MINERALS AND CONCENTRATES THEREOF Rolf Hallberg, Ulf Edvardsson, S 135 55 Tyres Sweded A lying rotatable drum for continuous biological decomposition which includes at least one transversal partition for dividing the con- tainer interior into chambers. The partition has opening to transmit liquid between the chambers. Guide means are also provided. 5030426 BIOMINING OF GALLIUM AND GERMANIUM CONTAINING ORES Gail L A Bowers-Irons, John R Pease, Quynh K Tran, Tracy Gibb, Robert J Pryor, Sandr Had- dad assigned to Technical Research Inc Disclosed is a high temperature process (e.g.)60 degrees C.) for leaching selected metal compounds e.g. gallium or germanium from ore containing those compounds. The method includes placing the ore into a culture medium containing bacteria. Bacteria capable of leaching the metal compounds from the ore leach the metals from the ore. The bacteria preferably used will be bacteria ATCC 53921 and mutations and recom- binants thereof. The ore is generally crushed to between 20 and -400 mesh before placement into the culture medium containing bacteria. and silver values from ore using activated carbon for adsorbing the values, wherein the activated carbon is treated with a suitable oxidant having an oxidation potential higher than that of oxy- gen. A preferred oxidant is potassium per- manganate. Activated carbon so treated has an enhanced affinity for adsorbing silver, even un- der conditions which traditionally have favored loading of carbon with gold. 5035365 THORTVEITITE ORE BENEFICIATION PROCESS Scott D Birmingham assigned to Boulder Scien- tific Company A thorteveitite ore beneficiation process which comprises comminuting the ore by wet auto- genuous grinding to substantially liberate the thortveitite contained therein, and passing the comminuted ore through a nonuniform magnetic field to produce a concentrate and a tailing, the concentrate containing a substantially greater percentage of thortveitite than the ore. 5035721 METHOD FOR BENEFICIATION OF LOW-RANK COAL Linda Atherton assigned to Electric Power Research Institute Inc A method is provided for removing moisture and improving the handling and storage charac- teristics or low-rank coal by demoisturizing the coal and rendering the coal surfaces hydro- phobic, separating the fines and agglomerating the fines in a slurry. 5034055 PROCESS FOR THE ENHANCED PRODUCTION OF SILVER FROM GOLD AND SILVER BEARING ORE John W Rowson, Saskatoon, Canada assigned to Cluff Mining There is disclosed a process for recovering gold 5051165 QUALITY OF HEAVY MINERAL CONCENTRATES William H Andrews, Waverley, Australia assigned to Wimmera Industrial Minerals Pty Ltd The specification discloses a process for substantially reducing the radioactivity of heavy mineral

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Page 1: 5035365 Thortveitite ore benefication process

1472 New Patents

rotor surface on the upstream side of its rota- tional axis, and causing the rotor to rotate at a linear speed of its outer surface which is substantially higher than the linear flow rate of the stock in the conduit so that the rotor surface breaks up the air impinging thereon into bubbles and dist- ributes those bubbles in the stock flowing therepast to create foam within the cell.

5028398

DEVICE FOR PROVIDING A CONTINUOUS BIOLOGICAL

DECOMPOSITION OF MINERALS AND CONCENTRATES THEREOF

Rolf Hallberg, Ulf Edvardsson, S 135 55 Tyres Sweded

A lying rotatable drum for continuous biological decomposition which includes at least one transversal partition for dividing the con- tainer interior into chambers. The partition has opening to transmit liquid between the chambers. Guide means are also provided.

5030426

BIOMINING OF GALLIUM AND GERMANIUM CONTAINING

ORES

Gail L A Bowers-Irons, John R Pease, Quynh K Tran, Tracy Gibb, Robert J Pryor, Sandr Had- dad assigned to Technical Research Inc

Disclosed is a high temperature process (e.g.)60 degrees C.) for leaching selected metal compounds e.g. gallium or germanium from ore containing those compounds. The method includes placing the ore into a culture medium containing bacteria. Bacteria capable of leaching the metal compounds from the ore leach the metals from the ore. The bacteria preferably used will be bacteria ATCC 53921 and mutations and recom- binants thereof. The ore is generally crushed to between 20 and -400 mesh before placement into the culture medium containing bacteria.

and silver values from ore using activated carbon for adsorbing the values, wherein the activated carbon is treated with a suitable oxidant having an oxidation potential higher than that of oxy- gen. A preferred oxidant is potassium per- manganate. Activated carbon so treated has an enhanced affinity for adsorbing silver, even un- der conditions which traditionally have favored loading of carbon with gold.

5035365

THORTVEITITE ORE BENEFICIATION PROCESS

Scott D Birmingham assigned to Boulder Scien- tific Company

A thorteveitite ore beneficiation process which comprises comminuting the ore by wet auto- genuous grinding to substantially liberate the thortveitite contained therein, and passing the comminuted ore through a nonuniform magnetic field to produce a concentrate and a tailing, the concentrate containing a substantially greater percentage of thortveitite than the ore.

5035721

METHOD FOR BENEFICIATION OF LOW-RANK COAL

Linda Atherton assigned to Electric Power Research Institute Inc

A method is provided for removing moisture and improving the handling and storage charac- teristics or low-rank coal by demoisturizing the coal and rendering the coal surfaces hydro- phobic, separating the fines and agglomerating the fines in a slurry.

5034055

PROCESS FOR THE ENHANCED PRODUCTION OF SILVER FROM

GOLD AND SILVER BEARING ORE

John W Rowson, Saskatoon, Canada assigned to Cluff Mining

There is disclosed a process for recovering gold

5051165

QUALITY OF HEAVY MINERAL CONCENTRATES

William H Andrews, Waverley, Australia assigned to Wimmera Industrial Minerals Pty Ltd

The specification discloses a process for substantially reducing the radioactivity of heavy mineral